Annu Int Conf IEEE Eng Med Biol Soc. 2021 Nov;2021:6376-6379. doi: 10.1109/EMBC46164.2021.9629629.
Since a vibrator needs to be pressed onto the osseous parts of the head, bone-conduction (BC) is often accompanied by pain and esthetic problems. In order to solve these problems, "distant presentation" has been proposed. In the distant presentation, vibrators are presented to the neck, upper limb or trunk. Our previous studies focused on the perception and propagation characteristics of distantly-presented BC sound in the ultrasonic range and an application to a novel audio-interface. On the other hand, a limited number of studies have been conducted on distantly-presented BC in the audible-frequency range. In this study, to examine the basic properties of the distantly-presented BC perception in the audible-frequency range, hearing thresholds, difference limens for frequency (DLFs) and temporal modulation transfer functions (TMTFs) were measured under the condition that AC sounds were insulated sufficiently. The results obtained indicated that BC sounds can be clearly perceived at distal parts of the body even in the audible-frequency range and no significant degradation of frequency and temporal information occurs in the propagation process in the body.
由于振动器需要按压在头部的骨头上，因此骨传导（BC）通常伴随着疼痛和美学问题。为了解决这些问题，提出了“远程呈现”。在远程呈现中，振动器被呈现到颈部、上肢或躯干。我们之前的研究集中在超声范围内远程呈现的 BC 声音的感知和传播特性以及在新型音频接口中的应用。另一方面，在可听频范围内对远程呈现的 BC 进行了有限的研究。在这项研究中，为了检查可听频范围内远程呈现的 BC 感知的基本特性，在 AC 声音被充分隔离的条件下测量了听力阈值、频率差异极限 (DLFs) 和时间调制传递函数 (TMTFs)。得到的结果表明，即使在可听频范围内，BC 声音也可以在身体的远端清晰地感知到，并且在身体内的传播过程中不会出现频率和时间信息的明显退化。
